Astronomers used a telescope in Hawaii to find a new object on the outer edges of our solar system, helping to fuel evidence of a long-standing theory about Planet Nine, or Planet X. For years, ...

The cold and mysterious Oort cloud at the edge of our solar system may be hiding a rogue exoplanet, new research suggests. When you purchase through links on our site, we may earn an affiliate ...

Scientists have discovered a rare six-planet system, HD 110067, where all planets orbit their star in perfect mathematical ...

An elusive Earth-like planet in our solar system could finally be discovered within the next few years. Known as Planet Nine or Planet X, it is a hypothetical planet that has long been rumoured to ...

Find the answer for Planet between Saturn and Neptune from the people who brought you the USA TODAY Daily Crossword Puzzle.

Neptune, the eighth planet from the Sun – The Distant Planet. This bright blue orb hanging out near the edge of the solar system has garnered intrigue from sky watchers and scientists alike. Like its ...

An artist’s illustration of a possible ninth planet in our solar system, hovering at the edge of our solar system. Neptune’s orbit is show as a bright ring around the Sun. (Image: ESO/Tom ...

Scientists may finally have an answer for why the ferocious jet streams on the solar system’s giant planets blow in opposite ...